Downlink Physical Signals

5G NR primary and secondary synchronization signals (PSS and SSS) and reference signals (DM-RS for PBCH and PDSCH, PT-RS for PDSCH, CSI-RS, and PRS)

Primary and secondary downlink synchronization signals are used by the user equipment (UE) to obtain the cell identity and frame timing. The UE uses the demodulation reference signal (DM-RS) and the channel state information reference signal (CSI-RS) to aid channel estimation and to support measurements. For phase noise compensation, the UE uses the PDSCH phase tracking reference signal (PT-RS). Positioning reference signal (PRS) is used to estimate the position of the UE in the wireless network.

Functions

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Synchronization Signals

`nrPSS`	Generate PSS symbols
`nrPSSIndices`	Generate PSS resource element indices
`nrSSS`	Generate SSS symbols
`nrSSSIndices`	Generate SSS resource element indices

PDSCH Demodulation Reference Signal

`nrPDSCHDMRS`	Generate PDSCH DM-RS symbols
`nrPDSCHDMRSIndices`	Generate PDSCH DM-RS indices
`nrPDSCHDMRSConfig`	PDSCH DM-RS configuration parameters

PBCH Demodulation Reference Signal

`nrPBCHDMRS`	Generate PBCH DM-RS symbols
`nrPBCHDMRSIndices`	Generate PBCH DM-RS resource element indices

Channel State Information Reference Signal

`nrCSIRS`	Generate CSI-RS symbols
`nrCSIRSIndices`	Generate CSI-RS resource element indices
`nrCSIRSConfig`	CSI-RS configuration parameters

PDSCH Phase Tracking Reference Signal

`nrPDSCHPTRS`	Generate PDSCH PT-RS symbols
`nrPDSCHPTRSIndices`	Generate PDSCH PT-RS Indices
`nrPDSCHPTRSConfig`	PDSCH PT-RS configuration parameters

Positioning Reference Signal

`nrPRSConfig`	PRS configuration parameters
`nrPRS`	Generate PRS symbols
`nrPRSIndices`	Generate PRS resource element indices

Carrier Configuration

`nrCarrierConfig`	Carrier configuration parameters
`nrResourceGrid`	Generate empty carrier slot resource grid

Topics

Map 5G Physical Channels and Signals to the Resource Grid
Generate and map 5G NR physical channels and signals to the resource grid using 5G Toolbox™ features.
Synchronization Signal Blocks and Bursts
Generate multiple 5G NR synchronization signal blocks (SSBs) to form a synchronization signal burst (SS burst).
NR Channel Estimation Using CSI-RS
Perform channel estimation using CSI-RS symbols and indices mapped into a carrier resource grid.
5G NR CSI-RS Measurements
Learn how to measure the CSI-RSRP, CSI-RSSI, and CSI-RSRQ using the CSI-RS.

Featured Examples

NR PDSCH Resource Allocation and DM-RS and PT-RS Reference Signals

Learn about the effects of PDSCH resource allocation on the time-frequency structure of DM-RS and PT-RS.

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NR SSB Beam Sweeping

Employ beam sweeping at gNB and UE and learn about beam management procedures during initial access.

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NR Downlink Transmit-End Beam Refinement Using CSI-RS

Transmit multiple CSI-RS resources in different directions in a scattering environment and select the optimal transmit beam based on RSRP.

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NR Phase Noise Modeling and Compensation

Analyze the impact of phase noise in a 5G OFDM system and use PT-RS in compensating the CPE.

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NR Positioning Reference Signal

Learn about the effects of different PRS resource set configurations on the time-frequency structure of PRS resources.

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NR Positioning Using PRS

Calculate the position of UE within a network of gNBs by using NR positioning reference signal.

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